Cylinder-lubricator.



No. 640.773. Patented 1an. 9, |900. B. F. KELSEY.

(Application led Oct. 3, 1898.)

(No Model.) 2 Sheets-Sheet I Il I I In'. lIll IU llllllll Ili 1N: uonms serais on. morourno.. wAsnma'mu. n. c.

No. 640,773. Patented 1an. 9, i900.

s. F. KELsEY. CYLINDER LUBBICATR.

(Application led Oct. 3, 189B.)

2 Sheets-Sheet 2.

(No Model.)

if WM mz Nonms PETERS ca., Primo-uma. wnsumcron. n. c.

STATES Ntra Aram

CYLINDER-LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 640,773, dated January 9, 1900.

Application iiled October 3, 1898. Serial No,A 692,488. (No model.)

T0 @ZZ whom it may concern.-

Beit known that I, BENJAMIN F. KELsEY, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Cylinder-Lubricators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved lubricator-feeding device for cylinders.

It relates particularly to that class of lubricator-feeding devices usually styled chokefeed lubricators, audit is adapted for use in connection with locomotives or stationary engines.

The choke-feed devices now in general use on cylinder-lubricators will eect the feed of the oil to the valve-chest and cylinders in sufficient quantities as long as there is sufficient difference of pressure in the lubricator and in the cylinder-pipe. Otherwise stated, as long as the throttle-valve is partly closed the ordinary choke-feed will supply the needed oil; but if the throttle be wide open, as when the engine is drawing a heavy load on a steep grade, or for any other reason, the pressure in the valve-chest and cylinder-pipe will approximate so closely to that in the lubricator that sufficient oil will not be fed through the ordinary choke-feed. Still otherwise stated, if the contracted passage in the choke-feed be adapted for-the desired supply of oil when working the engine with the steam more or less throttled the lubricator will not Asupply sufficient oil when the throttle is wide open.

The extreme difculty in securing the proper feed of oil into the cylinder and steam-chests when the throttle-valve is wide open and the engine doing hard work, with the result that the pressure in the steam-chests closely approximates the pressure iu the lubricator, is due to back pressure against the feed of the lubricator caused by the impulses or intermittent increases in pressure while this approximation of pressures exists under the above conditions.

One of the salient features of my invention is directed to a device ordevices which act to convert or turn a portion of the pressure due to the impulses into a reacting force which tends to strengthen or supplement the normal feed. More specically stated, I provide a by-passage having a relatively large receiving extremity subject to the pressures from the impulses and having a contracted nozzle or delivery end arranged to discharge within the oil-delivery passage in the direction of the feedof the oil.

Another feature of my invention consists in the provision of a device whereby an increased pressure per square inch is put upon the` oil over and above the pressure of the steam which acts directly or indirectly to force the oil from the oil-containing receptacle.

In' addition to the features above noted my invention comprises novel features of coustruction to be hereinafter specifically noted; and, broadly stated, my invention consists of the novel devices and combinations of devices defined in the claims.

Obviously my invention has for its object to provide an improved device of the character above noted which will be free from certain defects found in prior devices.

My invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Figure 1 is a view in side elevation with some parts broken away and others shown in section, illustrating the preferred form of my improved lubricating device and its connections to the steam-chest of an engine. Fig. 2 is a front elevation with some parts broken away and others removed, showing the lubricator-feedin g device illustrated in Fig. l. Fig. 3 is a detail view in plan of a part of the device, other parts being removed and the positions of the cylinders being illustrated by dotted lines; and Fig. 4 is a detail View, partly in side elevation and partly in vertical section, showing the feed-valve.

l indicates the cylinder, 2 the steam-chest, and 3 the valve-stem, of a locomotive or other engine. In this preferred construction the lubricating device comprises 4a pair of cylinders a and l), which are located side by side and are secured to a common base-bracket c. Thecylinder a receives the steam, and the IOO cylinder b .is adapted to receive and contain a body of lubricating-oil z.

Piston-heads ce and b,respectively,worl; in the cylinders a and b and are provided, respectively, with pistonrods a2 and b2, that work in the ordinary manner through suitable stuffing-boxes formed in the respective cylinder-heads. At their outer ends the piston-rods a2 and b2 are provided, respectively, with racks a3 and b3, that have dovetailed grooves in their backs or outer edges and in which dovetailed guides o of a supporting-bracket c2 Work to guide said racks for true vertical movements. Y The supporting-bracket c2 has a central depending portion c3, Which is rigidly secured to and between the cylinders aand b. A spur-wheel d, mounted on a stud or pin projection d from the supporting-bracket c2, is in mesh with both racks a3 bf, and the said racks are so set Withrespect to each other that the piston-headsa and b' Will be simultaneously moved to their extreme positions in the opposite ends of their respective cylinders. It should be here noted that the cylinder aand its piston-head are of greater diameter than are the cylinder h and its piston. From this it of course follows that the aggregate pressure on the piston-head c' from the steanwill equal the aggregate resisting pressure on the piston-head b' from the oil aand consequently that the pressure per square inch on the oil will be in excess of the pressure per square inch of the steam within said cylinder o. This, as will later more clearly appear, insures the feed of the oil into the cylinder and steamchest.

A steam-supply pipe e, which leads from the boiler or other suitable source of supply, opens into the bottom of the cylinder a. As

shown and preferred, this pipe e is provided.

with an ordinary globe valve e', and the cylinder a is shown as provided with a drip'- cock e2.

Oil is introduced into the cylinder ZJ While the piston-head b is raised through a neck or tubular section j, that opens into the bottom of said cylinder and is provided at its upper end with a funnel-shaped mouth f', adapted to be opened and closed by a hand-valve f2.

The oil-delivery pipe or tube g opens from the bottom or lower portionof the cylinder b and leads to and opens into the steam-chest 2 of the engine. At this point it may be stated that this oil-delivery pipe g instead ofv opening directly into the steamchest might open directly into the steam-supply pipe, which in turn opens into the cylinder. As shown, this oil-delivery pipe g involves a tubular glass section g', which is coupled so as to form a part of said oil-delivery tube or pipe by union or joint sections g2. The upper union orjoint section g2 forms an elbow between one section of saiddelivery-tube g and said glass section g, and it is provided with a capillary or contracted oil-passage g3, which is adapted to be opened and closed by a hand-set needle valve g4. Also, as shown and preferred, the

union-section q2 is provided with a nipplen like dropper g5, which surrounds the capillary passage g3 and depends therefrom into the glass or transparent tube g'.

At its delivery end the oil-delivery tube g is provided with a contracted passage g, which, as shown, is formed hy a bushing or perforated plug gl. A return tube or passage gS opens at its large end into the steam-chest 2 and is extended into the delivery end of the feed-tube g, wherein it terminates in a nozzie-section gvvhich is positioned to discharge in the direction of the feed of the oil directly into the contracted passage 9G. As shown, this return or reaction tube g8 is formed in two sections, which are connected by a unionjoint gli.

Another device which operates in very much the saine manner as the device just described is preferably located farther forward in the feed-tube g. This device, as shown and preferred, comprises a return or reaction passage g, which is formed integral with a section 12 of the feed-tube g. The larger receiving end of this passage o1l is located farther onward than its smaller end. Between the large and small extremities of said pas sage g the feed-tube gis provided with a contracted nipple or nozzle section Q13, and the smaller end of said passage g terminates in a similar nipple or nozzle section gm. The nozzle g14 is positioned to discharge directly into the nozzle g18 in the direction of the feed of the oil, 'and preferably the passage through the nozzle Q13 is slightly larger than that through the nozzle Q14. y

Operation: The operation, briefly summa rized, is substantially as follows: As previously stated, the oil is fed 'from the oil-containing cylinder or cup t under a pressure in excess of that of the steam-pressure in the motor-cylinder a. By regulating the valve ff4 the dow of the oil may be increased, decreased, or entirely shut off. The action of the reacA tion-tube g8 will new be described, and this will suffice also for a description of the action of the similar passage g, Alocated farther ahead in the feed-tube g. As near as I have been able to determine this action will he substantially as follows: Under the impulses of pressure Within the `steam-chest 2 the steam will find a much more rapid escape through thelarge receiving end of the reaction-pas@ sage g8 than itdoes through the much smaller passage g in the plugg7 of the feed-pipe, and hence an instantaneous forced draft will be blown through the nozzle g9 and thence through the passage g0 in the direction-of the feed of the oil. In this manner the force of the impulses of pressure which would tend to retard the iiow of the oil is made to react in such manner as to assist in the feed ofthe oil into thecylinder. It is also ohvious'that the greater are these impulses of pressure the greater will he their reacting force to assist the feed. Of coursev it is not claimed that uu- Ader steady pressure the reaction-passages into instantaneous reacting forces. The reaction-passage g11 and its cooperating parts act as an auxiliary device to reinforce the action of the other similar device.

In the illustration given a single feed-tube leading from the oil-cylinder to a single steamchest is shown; but on a locomotive or other two cylinder engine two such feed -tubes would of course be provided.

lVhat I claim, and desire to secure by Letters Patent of the United States, is as follows:

l. In a lubricator-feeding device, the combination with a pair of differential-feed motors parallel with and spaced apart from each other, of steam or similar connections leading to the low-pressure motor, an oil-passage or similar connection leading from the highpressure motor to the device to be lubricated, and an intermediate devicelpivoted to a suitable support and connected to the movable parts of said two motors, the arrangement being such that the pressure per square inch within the oil-containing motor will exceed that within the companion motor, substantially as and for the purposes set forth.

2. A choke-feed device for lubricators, comprising an oil-supply tube or passage, and a reaction-passage having a relatively large receiving extremity open to the pressure against which the oil is to be fed and having a contracted discharge end positioned to discharge into said oil-supply tube or passage, in the direction of the feed of the oil, substantially as described.

3. Ach oke-feed device forlubricators, comprising an oil-supply tube or passage having a contracted section, and a reaction-passage open at its larger end to the pressure against which the oil is fed and having a contracted discharge extremity positioned to discharge directly into the contracted passage of said feed-tube, in the direction of the feed of the oil, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

BENJAMIN F. KELSEY.

Witnesses:

W. A. KELsEY, F. D. MERCHANT. 

